Improvement in lightning-rod points



PATENTED OCT. 9,6, 1,869,

J. F. BOYNTON.

LIGHTNING ROD POINT.

" idioti n-ttes dem Witt.

JOHN F. BOYNTON, 0F SYRACUSE, NEW YORK.

Letters Patent No. 96,194, dated Octolm` 26, 1869.

IMPRQVEMBNT' IN LIGHTNING-Ron POINTS.

The Schedule referred to in these Letters Patent and making part of the name.

dic from a piece of plate or sheet-metal, and so corrn 'gated as to increase its smiacc, and give strength and stitiness to the material.l 1t is shaped somewhat as a spew-head, with :m edge, which acts as an extended point, and is continued nround from the point unto the hilt, tbe, or t'errulc, which connects it with the rod. 1t is provided with one or more corrngations, elevated or depressed, which may run longitudinally, and with others diverging :it dittirent angles toward or unto the edge, thereby giving to the edge a plain or zigzag condition, and increasing the surface of theplate, the whole presenting much the appearance. of the vcrtebue and ribs-of a fish.

A is the telrnle, tube or hiltot' the corrugated spearpoint ot' a. ligl1tning-rod.

B, the point of the spear-head.

C G, edges.

1'), longitudinal corrugations.

'E E, lateral alternating wn'ugations.

d is the. ring which holds the hatvesot' the spear.--

ferrulcs together, by being milled or soldered..

1 am aware lightning-rod points have beenunmle in various ways and forms; but

What l claim as my invention, and desire to secure by Letters Yat-tent, is-

1. A lightning-rod point, with compound corrugations, and constructed as above described.

2. The compound con'ugated point, combined with a swaged t'errule or tube, for connecting it with the rod.

Witnesses 'I. C. GoNNoLLY, H. GARRETT.

JOHN F. BOYNTON. 

